Yup, that’s unfortunate, to say the least. First I’ve heard of this seller, but needless to say, I’ll be avoiding them. They seem to advertise on ICMag and Rollitup, among others, which is probably the reason for your ban. Sounds like others have had better luck, but their review on Seedfinder has a 6/10 for product quality, which I think says something. Doesn’t matter if they ship fast if they’re shipping crap 
I don’t even know how you’d manage to do that to seeds. Maybe repeated freeze/thaw cycles? I just took at peek at my old seed stash, circa 2001 and stored in a ziplock bag at room temp (which is to say, they’re quite dead), and didn’t see any cracks like that.
At least you have viable seeds from other sources, though it still sucks that they sent you garbage beans and didn’t even try to make things right.